CN218731384U - Monomer electric core and battery module of integrated thermal management structure - Google Patents

Abstract

The utility model provides an integrated heat management structure's monomer electricity core and battery module, the monomer electricity core includes the core package, still includes the heat transfer piece, has installation space along its length direction on the heat transfer piece, and the at least part of core package is inserted and is located installation space, and installation space and core package surface looks adaptation are equipped with the heat transfer runner that supplies the heat transfer medium to flow in the heat transfer piece, and the heat transfer medium is used for implementing the heat exchange to the core package surface. The utility model integrates the core package and the heat exchange piece with the heat exchange function to form a single battery cell, and in the process of forming the battery module by the single battery cell, the heat exchange piece integrated on the core package can replace the traditional heat management structure, thereby greatly reducing the assembly complexity of the heat management structure and the single battery cell; every electric core all is wrapped up by heat transfer piece simultaneously, can realize the heat transfer of the great area of core package, improves the heat exchange efficiency of core package, and then can improve the heat exchange efficiency of whole battery module.

Description

Monomer electric core and battery module of integrated thermal management structure

Technical Field

The utility model relates to a battery heat management technical field especially relates to a monomer electricity core and battery module of integrated heat management structure.

Background

At present, when the power battery is generally in the range of 20-40 ℃, the charge and discharge performance is best, and the service life is best. When the battery is in a low-temperature environment, the battery temperature needs to be returned to the optimal operating temperature range through the heating function of the thermal management. The power battery can generate heat during working, so that the temperature of the power battery is continuously increased, thermal runaway is easily caused, the service life of the battery is influenced, and the power battery needs to be cooled through a heat dissipation function of thermal management. Therefore, in order to ensure the battery to work within a reasonable temperature range and guarantee the thermal safety performance of the battery, a thermal management device needs to be installed on the power battery to heat and cool the battery properly.

Traditional power battery thermal management structure adopts and sets up liquid cooling board in battery module bottom surface and side more, comes the bottom surface and two sides of cooling heat dissipation to monomer electricity core, pastes the heating film simultaneously in battery module side, realizes heating two sides of monomer electricity core. According to the heat management mode, the liquid cooling plate is in contact with the single battery cell only through three surfaces, the large surface and the large surface of the single battery cell cannot be cooled, the high temperature between the large surfaces of the single battery cell is easy to occur, and thermal runaway is caused. Simultaneously, the heating film can only heat two side surfaces of the single battery core, and cannot heat between the large surface and the large surface of the single battery core, so that the heating efficiency of the single battery core is low, and the temperature of the battery cannot be rapidly raised.

Chinese patent with publication number CN114267901A discloses a battery module and battery pack, it includes a plurality of electric cores and liquid cooling board, a plurality of electric cores set up side by side and form electric core group, the liquid cooling board is the snake type, and walk around every electric core to the other end of electric core group in proper order by the one end of electric core group, above-mentioned liquid cooling board structure can lead to the big face to monomer electricity core and dispel the heat or heat, one of them side of monomer electricity core is unable all the time to contact with the liquid cooling board, thereby make monomer electricity core unable high efficiency heating or heat dissipation all around, and then make battery module heat exchange efficiency reduce. In addition, in battery module assembling process, above-mentioned liquid cold plate needs to assemble fixedly with each monomer electricity core, needs more spare parts to participate in, has reduced battery module's volume utilization, has increased the assembly complexity when monomer electricity core pack becomes battery module simultaneously.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a monomer electricity core and battery module of integrated heat management structure solves current heat management structure and monomer electricity core mutual independence, and heat management structure and monomer electricity core constitute the complicated problem of battery module assembling process.

The technical scheme of the utility model is realized like this:

in one aspect, the utility model provides an integrated heat management structure's monomer electricity core, the monomer electricity core includes the core package, still includes the heat transfer piece, the last installation space that has along its length direction of following of heat transfer piece, the core package divide to insert to locate in the installation space, just installation space's internal surface with the core package surface is connected, be equipped with the heat transfer runner that supplies heat transfer medium flow in the heat transfer piece, heat transfer medium is used for right the heat exchange is implemented to the core package surface.

On the basis of the technical scheme, preferably, one end of the core bag with the pole column extends out of the installation space, one end of the core bag, which is far away from the pole column, is located in the installation space, and a liquid inlet and a liquid outlet which are communicated with the heat exchange flow channel are respectively arranged on the heat exchange piece at the two ends of the installation space.

As some embodiments, the heat exchanging element includes two first plate bodies and two second plate bodies, the two first plate bodies are arranged in parallel at intervals, the same ends of the two first plate bodies are respectively fixedly connected with each other through the second plate bodies, the two first plate bodies and the two second plate bodies mutually enclose to form the installation space for insertion of the core package, the heat exchanging flow channels which are mutually communicated are arranged inside the first plate bodies and the second plate bodies, the liquid outlet is located on the second plate body where one end of the installation space is located, and the liquid outlet is located on the second plate body where the other end of the installation space is located.

Further, it is preferable that the first plate body contacts with the large surface of the core bag, the second plate body contacts with the side surface of the core bag, and arc-shaped protrusions arranged at equal intervals are arranged on the side of the first plate body contacting with the core bag.

As another embodiment, the heat exchange member further includes a third plate located at an end of the heat exchange member away from the core pack pole, the third plate is fixedly connected to the two first plates and the two second plates respectively to plug one end of the installation space, and an end of the core pack away from the pole contacts with the third plate.

Further, preferably, the heat exchange flow channel is also arranged in the third plate body, and the heat exchange flow channels in the first plate body, the second plate body and the third plate body are sequentially connected in series; the liquid inlet is located on the first plate body or the second plate body where the opening end of the installation space is located, and the liquid outlet is located on the third plate body.

On the other hand, the utility model discloses a battery module, including pipeline assembly, busbar and a plurality of monomer electricity core, it is a plurality of monomer electricity core sets up side by side, monomer electricity core is the side and sets up, just the utmost point post end of core package is towards horizontal direction one end, the big face of core package borders on each other, passes through between the utmost point post of two adjacent core packages the busbar carries out electrically conductive connection, the pipeline assembly is used for a plurality of on the monomer electricity core the piece that changes heat is connected.

For some embodiments, the pipeline assembly includes a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline is used for connecting liquid inlets on the heat exchange members in parallel, and the liquid outlet pipeline is used for connecting liquid outlets on the heat exchange members in parallel.

As another embodiment, the pipeline assembly includes an input pipeline, an output pipeline, and a communication pipeline, the input pipeline and the output pipeline are respectively connected in parallel with the liquid inlets on at least two adjacent heat exchange members with the same number at both ends of the battery module, and a plurality of groups of at least two heat exchange members with the same number in the middle of the battery module are connected in series through the communication pipeline.

The utility model discloses following beneficial effect has for prior art:

(1) The utility model discloses a monomer electricity core of integrated heat management structure, through establishing the replacement heat spare, and set up installation space on the heat exchange spare, make the core package insert and locate in installation space, and through installation space and core package surface adaptation, make the heat exchange spare integration set up at the core package surface, simultaneously through set up the heat transfer runner in the heat exchange spare, can let in heat transfer medium to the heat exchange spare inside, realize heating or heat dissipation to the core package surface, whole core package and the integration of the heat exchange spare that has the heat transfer function constitute monomer electricity core together, in the battery module group process is constituteed to monomer electricity core, the heat exchange spare of integration on the core package can replace traditional heat management structure, heat management structure and monomer electricity core assembly complexity have been greatly reduced; meanwhile, each battery core is wrapped by the heat exchange piece, so that heat exchange of the core cladding in a large area can be realized, the heat exchange efficiency of the core cladding is improved, and the heat exchange efficiency of the whole battery module can be further improved;

(2) One end of the core bag with the pole column extends out of the installation space, and one end of the core bag, which is far away from the pole column, is located in the installation space, so that on one hand, the core bag and the heat exchange piece are reasonably assembled, the part of the core bag, which is located outside the installation space, can be electrically connected, and on the other hand, the part of the core bag, which is located in the installation space, can exchange heat with the heat exchange piece in a larger area;

(3) The first plate body is in contact with the large surface of the core bag, and the arc-shaped bulges which are distributed at equal intervals are arranged on the surface of the first plate body in contact with the core bag, so that the side surface of the core bag can be connected with the arc-shaped bulges, the core bag is in interference fit with the installation space, and the arc-shaped bulges can absorb the micro-expansion deformation of the core bag in the charging and discharging processes;

(4) The third plate body is arranged at one end, far away from the core package polar column, of the heat exchange piece, so that one end of the installation space can be plugged, the core package is prevented from displacing in the installation space relative to the heat exchange piece, meanwhile, the core package is wrapped by the heat exchange piece in five surfaces, and the core package can be protected;

(5) Through also being provided with the heat transfer runner in the third plate body, the inside heat transfer runner of first plate body, second plate body and third plate body is established ties in order, can realize that five faces of core package carry out the heat transfer, improves the heat exchange efficiency of core package greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a single cell of an integrated thermal management structure according to the present invention;

fig. 2 is a schematic structural view of the core package and the heat exchange member disclosed in the present invention;

fig. 3 is a schematic structural view of the heat exchange member disclosed by the present invention;

fig. 4 is a plan sectional view of an assembly structure of the core package and the heat exchange member disclosed by the present invention;

fig. 5 is another schematic structural view of the heat exchange member disclosed by the present invention;

fig. 6 is a plan sectional view of another assembly structure of the core package and the heat exchange member disclosed by the present invention;

fig. 7 is a schematic diagram of a cross-sectional structure of a single cell disclosed by the present invention;

fig. 8 is a schematic structural view of the pipe assembly disclosed in the present invention;

fig. 9 is a schematic view illustrating a first view angle assembly structure of another structure of the pipe assembly and the single cell according to the present invention;

fig. 10 is a schematic view illustrating a second view angle assembly structure of the single cell and another structure of the pipe assembly according to the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 9 at A;

FIG. 12 is an enlarged view of a portion of FIG. 9 at B;

FIG. 13 is an enlarged view of a portion of FIG. 10 at C;

reference numerals:

1. a single cell; 10. a core package; 20. a heat exchange member; 200. an installation space; 201. a heat exchange flow channel; 202. a liquid inlet; 203. a liquid outlet; 204. a first plate body; 2041. an arc-shaped bulge; 205. a second plate body; 206. a third plate body; 3. a pipeline assembly; 31. a liquid inlet pipeline; 32. a liquid outlet pipeline; 33. an input pipe; 34. an output pipe; 35. is communicated with the pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Among the prior art, monomer electricity core is behind the constitution battery module, in order to improve the radiating efficiency of monomer electricity core, need lay horizontal liquid cold plate in monomer electricity core bottom surface, still need set up side direction liquid cold plate simultaneously between monomer electricity core side and side, big face and big face, come to implement the heat dissipation to monomer electricity core surface. Simultaneously in order to realize the heating of monomer electricity core, still need set up the heating film between monomer electricity core side and side or big face and big face, these radiating part and heater block mutual independence need assemble with monomer electricity core in the battery module respectively, and in the assembling process, more spare parts are participated in to needs, have increased the assembly complexity when monomer electricity core pack becomes the battery module. Although there is the integration liquid cold drawing that discloses serpentine structure among the prior art, can realize dispelling the heat to three surfaces of monomer electricity core, it still has the complicated problem of assembly in battery module assembly process, need implement the erection joint with each monomer electricity core.

Therefore, in order to solve the above problems, the present embodiment provides a single cell with an integrated thermal management structure, and referring to fig. 1 and 2, a single cell 1 of the present embodiment includes a core package 10 and a heat exchange member 20, a mounting space 200 is provided on the heat exchange member 20 along a length direction thereof, and since the core package 10 is of a square structure, the heat exchange member 20 in the present embodiment has a square structure.

The core package 10 is inserted into the installation space 200, and the inner surface of the installation space 200 is connected with the outer surface of the core package 10, so that after the core package 10 is inserted into the installation space 200, the outer surface of the core package 10 can be attached and fixed to the inner surface of the installation space 200.

It should be noted that, in the embodiment, the core pack 10 is inserted into the installation space 200, so that the terminal of the core pack 10 needs to be exposed from the installation space 200, which is convenient for electrical connection in the subsequent battery module assembling process.

A heat exchange flow channel 201 for a heat exchange medium to flow is arranged in the heat exchange member 20, and the heat exchange medium is used for performing heat exchange on the outer surface of the core package 10. In this embodiment, the heat exchange medium may be water or other liquid capable of heating or dissipating heat.

By adopting the technical scheme, the heat exchange piece 20 is arranged, the installation space 200 is formed in the heat exchange piece 20, the core package 10 is inserted into the installation space 200, the heat exchange piece 20 is integrally arranged on the outer surface of the core package 10 by adapting the installation space 200 to the outer surface of the core package 10, meanwhile, a heat exchange runner 201 is arranged in the heat exchange piece 20, a heat exchange medium can be introduced into the heat exchange piece 20 to heat or radiate the outer surface of the core package 10, the whole core package 10 and the heat exchange piece 20 with the heat exchange function are integrated together to form the single battery core 1, and in the process that the single battery core 1 forms the battery module, the heat exchange piece 20 integrated on the core package 10 can replace a traditional heat management structure, so that the assembly complexity of the heat management structure and the single battery core 1 is greatly reduced; meanwhile, each battery core is wrapped by the heat exchange piece 20, so that heat exchange of the core package 10 in a large area can be realized, the heat exchange efficiency of the core package 10 is improved, and the heat exchange efficiency of the whole battery module can be improved.

As some preferred embodiments, referring to fig. 2 and 3, one end of the core package 10 with the terminal posts extends out of the installation space 200, preferably, a top cover end surface of the core package 10 is flush with an opening end surface of the installation space 200, and only the terminal posts leak out of the installation space 200, so that the core package 10 and the heat exchange member 20 are reasonably assembled, and a plurality of core packages 10 are conveniently electrically connected in the battery module.

One end of the core package 10, which is far away from the pole, is located in the installation space 200, so that the part of the core package 10, which is located in the installation space 200, can exchange heat with the heat exchange member 20 in a larger area. As preferred mode, the one end that utmost point post was kept away from to core package 10 flushes with installation space 200 terminal surface, on the one hand, makes core package 10 rational utilization space after the assembly in heat transfer member 20, improves monomer electricity core 1 at the space utilization of battery module.

The heat exchanging member 20 at the two ends of the installation space 200 is provided with a liquid inlet 202 and a liquid outlet 203 respectively, which are communicated with the heat exchanging channel 201. Can circulate through inlet 202 and outlet 203 and let in heat transfer medium to heat transfer runner 201 in heat exchange 20 to the realization implements the heat exchange to the core package 10 in the installation space 200, when core package 10 needs the heating, lets in heating medium, implements the heating to core package 10, when core package 10 needs the heat dissipation, lets in cooling medium, implements the heat dissipation to core package 10.

The embodiment shows a structural form of the heat exchanging element 20, and specifically, as shown in fig. 3 and 4, the heat exchanging element 20 includes two first plate bodies 204 and two second plate bodies 205, the two first plate bodies 204 are arranged in parallel at intervals, the same ends of the two first plate bodies 204 are respectively fixedly connected through the second plate bodies 205, the two first plate bodies 204 and the two second plate bodies 205 enclose each other to form an installation space 200 for inserting the core package 10, and in this embodiment, the installation space 200 is open at two ends. When the core pack 10 is assembled with the heat exchange member 20, the core pack 10 is directly inserted into the installation space 200 to implement interference fit.

In order to realize the heat dissipation of the periphery of the core package 10, referring to fig. 7, in this embodiment, heat exchange flow channels 201 are disposed inside the first plate 204 and the second plate 205, and meanwhile, the liquid inlet 202 is located on the second plate 205 where one end of the installation space 200 is located, and the liquid outlet 203 is located on the second plate 205 where the other end of the installation space 200 is located. It is worth noting that two heat exchange channels 201 which are not communicated with each other are arranged inside the second plate body 205 along the width direction, so that the heat exchange medium is introduced into the heat exchange channels 201 in the second plate body 205 through the liquid inlet 202, and the heat exchange medium in the second plate body 205 sequentially passes through the first plate body 204, the second plate body 205 and the first plate body 204 in the heat exchange channels 201, and finally flows into the heat exchange channels 201 in the second plate body 205 and finally flows out through the liquid outlet 203. In this embodiment, the heat exchanging channel 201 is configured as a serpentine channel, so that the heat exchanging medium can flow back and forth in the heat exchanging channel 201, thereby improving the temperature uniformity of the surface heat exchanging of the core package 10.

In this embodiment, the first plate 204 is in contact with the large surface of the core pack 10, and the second plate 205 is in contact with the side surface of the core pack 10, where it should be noted that the large surface of the core pack 10 is a surface where a wide side is located, and the side surface of the core pack 10 is a surface where a narrow side is located.

As some preferred embodiments, referring to fig. 2, the first plate 204 is provided with arc-shaped protrusions 2041 arranged at equal intervals on the surface contacting with the core package 10. From this setting, on the one hand can make core package 10 side be connected with arc arch 2041, the core package 10 and installation space 200 that make realize interference fit, on the other hand, arc arch 2041 can absorb little expansion deformation in the core package 10 charge-discharge process.

The embodiment shows another structural form of the heat exchanging element 20, specifically, as shown in fig. 5 and 6, the heat exchanging element 20 further includes a third plate 206, the third plate 206 is located at one end of the heat exchanging element 20 far away from the core pack 10, the third plate 206 is fixedly connected to the two first plates 204 and the two second plates 205, respectively, so as to plug one end of the installation space 200, and one end of the core pack 10 far away from the core pack contacts with the third plate 206. By adopting the above technical scheme, one end of the installation space 200 can be blocked by arranging the third plate body 206, so that the core package 10 is prevented from displacing relative to the heat exchange member 20 in the installation space 200. Meanwhile, the core package 10 is wrapped by the heat exchange member 20 for five surfaces, so that the core package 10 can be protected.

As some preferred embodiments, the heat exchange channels 201 are also disposed in the third plate 206, and the heat exchange channels 201 in the first plate 204, the second plate 205 and the third plate 206 are sequentially connected in series; the inlet port 202 is located on the first plate body 204 or the second plate body 205 where the open end of the installation space 200 is located, and the outlet port 203 is located on the third plate body 206. From this setting, also be provided with heat transfer runner 201 in the third plate body 206, the inside heat transfer runner 201 of first plate body 204, second plate body 205 and third plate body 206 is established ties in order, can realize that five faces of core package 10 carry out the heat transfer, improves the heat exchange efficiency of core package 10 greatly.

The utility model also provides a battery module, it is shown with reference to figures 8-10, including pipeline assembly 3, busbar and a plurality of monomer electricity core 1, a plurality of monomer electricity core 1 set up side by side, monomer electricity core 1 is the side and sets up immediately, the narrow limit of core package 10 is in the level setting promptly, and core package 10's utmost point post end is towards horizontal direction one end, core package 10's big face is adjoined each other, carry out electrically conductive connection through the busbar between two adjacent core package 10's the utmost point posts, set up from this, a plurality of monomer electricity core 1 set up side by side, and can realize the electricity between the core package 10 through the busbar and connect, can establish ties or parallelly connected between the core package 10. In order to make firm connection between the monomer electricity core 1, can set up heat conduction structure glue or double faced adhesive tape between two adjacent monomer electricity cores 1 and paste fixedly, paste a plurality of monomer electricity core 1 combinations through the bonding and constitute the battery module.

The pipeline assembly 3 is used for connecting the heat exchange members 20 on the plurality of single battery cells 1. Therefore, the heat exchange pieces 20 on the core packages 10 in the battery module can be circularly introduced with the heat exchange medium.

As an embodiment, referring to fig. 8, the pipeline assembly 3 includes a liquid inlet pipe 31 and a liquid outlet pipe 32, the liquid inlet pipe 31 is used for connecting liquid inlets 202 of the heat exchange elements 20 in parallel, and the liquid outlet pipe 32 is used for connecting liquid outlets 203 of the heat exchange elements 20 in parallel. From this setting, come to connect in parallel with a plurality of heat transfer pieces 20 through inlet channel 31 and liquid outlet pipeline 32, can realize that a plurality of heat transfer pieces 20 let in heat transfer medium in the battery module in step, realize all core packages 10 in the battery module and implement the heat exchange in step, improve heat exchange efficiency. In the process of parallel connection, the heat exchange media can be synchronously introduced into the plurality of heat exchange pieces 20 only by increasing the liquid inlet pressure and the flow.

As another embodiment, referring to fig. 9 to 13, the pipeline assembly 3 includes an input pipeline 33, an output pipeline 34 and a communication pipeline 35, the input pipeline 33 and the output pipeline 34 are respectively connected in parallel with liquid inlets 202 on at least two adjacent heat exchange members 20 with the same number at both ends of the battery module, and a plurality of groups of at least two heat exchange members 20 with the same number in the middle of the battery module are connected in series through the communication pipeline 35. From this setting, 20 series-parallel combinations of whole battery module heat transfer piece, and battery module both sides set up input pipeline 33 and output pipeline 34, realize heat transfer medium's input and output, can reduce the inlet pressure among the pipeline assembly 3, satisfying under the prerequisite that all monomer electricity cores 1 homoenergetic realized the heat transfer, reduce the consumption of battery module.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A cell (1) of an integrated thermal management structure, the cell (1) comprising a core package (10), characterized in that: still include heat transfer spare (20), have installation space (200) along its length direction on heat transfer spare (20), core package (10) are inserted and are located in installation space (200), just the internal surface of installation space (200) with core package (10) surface is connected, be equipped with in heat transfer spare (20) and supply heat exchange medium flowing heat transfer runner (201), heat transfer medium is used for right core package (10) surface implements the heat exchange.

2. The unitary cell (1) of an integrated thermal management structure according to claim 1, characterized in that: the core bag is characterized in that one end, provided with a pole, of the core bag (10) extends out of the installation space (200), one end, far away from the pole, of the core bag (10) is located in the installation space (200), and a liquid inlet (202) and a liquid outlet (203) communicated with the heat exchange flow channel (201) are respectively arranged on the heat exchange piece (20) at the two ends of the installation space (200).

3. The monolithic cell (1) of the integrated thermal management structure of claim 2, characterized in that: heat transfer piece (20) include two first plate bodies (204) and two second plate bodies (205), two first plate body (204) interval parallel arrangement, two pass through respectively with the one end of first plate body (204) second plate body (205) fixed connection, two first plate body (204) and two second plate body (205) enclose each other and close and form and supply core package (10) male installation space (200), first plate body (204) with second plate body (205) inside all is provided with mutual intercommunication heat transfer runner (201), inlet (202) are located on second plate body (205) at installation space (200) one end place, liquid outlet (203) are located installation space (200) other end place on the second plate body (205).

4. The unitary cell (1) of an integrated thermal management structure according to claim 3, characterized in that: the core bag is characterized in that the first plate body (204) is in contact with the large surface of the core bag (10), the second plate body (205) is in contact with the side surface of the core bag (10), and arc-shaped protrusions (2041) which are arranged at equal intervals are arranged on the surface, in contact with the core bag (10), of the first plate body (204).

5. The monolithic cell (1) of the integrated thermal management structure of claim 3, characterized in that: the heat exchange piece (20) further comprises a third plate body (206), the third plate body (206) is located the heat exchange piece (20) and is far away from one end of the core package (10) pole, the third plate body (206) is respectively provided with the first plate body (204) and the second plate body (205) which are fixedly connected, so that the one end of the installation space (200) is blocked, and one end of the core package (10) far away from the pole is contacted with the third plate body (206).

6. The unitary cell (1) of an integrated thermal management structure according to claim 5, characterized in that: the heat exchange flow channel (201) is also arranged in the third plate body (206), and the heat exchange flow channels (201) in the first plate body (204), the second plate body (205) and the third plate body (206) are sequentially connected in series; the liquid inlet (202) is located on a first plate body (204) or a second plate body (205) where an opening end of the installation space (200) is located, and the liquid outlet (203) is located on a third plate body (206).

7. The battery module is characterized by comprising a pipeline assembly (3), a busbar and a plurality of monomer battery cores (1) according to claims 3 or 6, wherein the monomer battery cores (1) are arranged side by side, the monomer battery cores (1) are arranged in a side-to-side mode, the pole ends of the core packages (10) face one end in the horizontal direction, the large faces of the core packages (10) are mutually abutted, two adjacent pole ends of the core packages (10) are in conductive connection through the busbar, and the pipeline assembly (3) is used for connecting the heat exchange pieces (20) on the monomer battery cores (1).

8. The battery module according to claim 7, wherein: pipeline assembly (3) include inlet pipe way (31) and liquid outlet pipe way (32), inlet pipe way (31) are used for connecting in parallel inlet (202) on each heat transfer piece (20), liquid outlet pipe way (32) are used for connecting in parallel liquid outlet (203) on each heat transfer piece (20).

9. The battery module according to claim 7, wherein: pipeline assembly (3) include input pipeline (33), output pipeline (34) and intercommunication pipeline (35), input pipeline (33) and output pipeline (34) respectively with inlet (202) on two at least adjacent heat exchange member (20) of the same quantity in battery module both ends are parallelly connected, establish ties through intercommunication pipeline (35) between a plurality of groups of the same quantity in battery module middle part two at least heat exchange member (20).

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